1-(2-Pyridyl)piperazine derivative of 1,6-HDI;1-(2-Pyridyl)piperazine derivative of 1,6-HDI@1000 μg/mL in DMSO;1-Piperazinecarboxamide, N,N'-1,6-hexanediylbis[4-(2-pyridinyl)-;1-(2-Pyridyl)piperazine derivative of 1,6-HDI @2900 μg/mL in DMSO;n,n'-1,6-hexanediylbis{4-(2-pyridinyl)-1-piperazinecarboxamide} solution;N,N'-(METHYLENEDIPHENYLENE)BIS(4-(2-PYRIDINYL)-1-PIPERAZINECARBOXAMIDE),1X1ML;n,n'-1,6-hexanediylbis(4-(2-pyridinyl)-1piperazinecarboxamide) solution (derivative of 1,6-hdip)